Fabric-shearing machine



July 24, 1928.@

nvm-'PEN 7E/v TL y Mo wam E 1,678,572 J. MoNFoRTs FABRIC SHEARINCT MACHINE 3 Sheets-*Sheet 3 Filed April 13, 1925 asc mono ro# INVENTOR.

By`Jl y,

Patented July 24, 1928.

PATENT oFFlcE.

JOSEPH MONFORTS, OF MUNICH-GLADBACH, GERMANY.

FABRIC-sanitarias MAoHrNE.

` Appleationled April 13, 1925, Serial No. 22,897, and in Germany May 13, 1924.

A common defect of machines for shearing fabrics is that the actuating mechanism for the knife cylinders and drum is com# removed by driving the knife cylinders by means of an electromotor carried by a pivoted arm, which can rotate vertically and is suspended in aloop ofthe driving belt. With this arrangement the motor tensions the belt, but yields When ther cylinders are lifted. The fabric drum may be driven by means of a pulley suspended in another loop of the belt. i

The invention is illustrated diagrammatically in the annexed drawings, which show three examples iii-Figs. l, 2 and 3 respectively.

In the example shown in Fig. l a designates the .shearing knives, which are driven collectively by a belt The belt forms a suspended loop, in which is hung the motor c, carried by an arm c pivoted at d. The Weight of the motor is sufficient to tension the belt, but Weight may he added. f designates the fabric to be treated. For driving the drum g the belt may at the top form a second loop b1, as indicated by a broken line7 there being in this loop a pulley fr, Which drives the drum by means of a belt or chain and also holds thedriving belt in contact with a larger portion of the knife l cylinders. n

ln the example shown in Fig. 2 there are three knife cylinders a, the arrangement being otherwise similar. ln order to have the contact surface of the belt approximately uniform in the case of each cylinder a pulley z' is disposed symi'netrically in relation to the pulley 7i.

ln the example shown in l? i g; 3 there are two pai-rs of knife cylinders a driven collectively by a single belt Z) and an electromotor c. F or treating the fabric on both sides the tu'o pairs of cylinders must rotate in opposite directions. For this purpose the belt Z) passes from the right hand pair of cylinders round a pulley n and thence to the left handpair of cylinders. The pulley /i suspended in the looped belt drives the two fabric drums g, g by means of gear wheels j, Z, m, n, o. It will be seen that even with four knife cylinders the actuating mechanism is veryl simple; the Weight of the motor serves to tension the belt and keep it uniformly taut.

'Vhat I claim is:

l. Driving means for fabric shearing niachines having a plurality of independently movable knife cylinders, comprising pulleys on said cylinders, a single belt engaging all. said. pulleys, and a swingably mounted electromotor having a pulley hanging in said belt.Y Y i 2. Driving means for fabric shearing machines having independently movable knife cylinders and a fabric drum, comprising pulleys on said cylinders and drum, a single belt engaging all said pulleys, and a siringably mounted electromotor having a pulley hanging in said belt.

The foregoing` specification signed at Berlin, Germany, this 20th day of March,

Jos. ivrouronrs.y 

